Nineteen rhymes with:
canteen, cantin, muntean, seventeen, valentin, augustin, canteen, cantin, casteen, chasteen, chretien, christine, cortine, eighteen, fifteen, foltene, fourteen, gelatine, guertin, justine, kristine, lopatin, martine, muntean, o'steen, preteen, routine, seventeen, shasteen, sistine, sixteen, steen, stene, teen, thirteen, umpteen, valentin
Nineteen sounds like:
nadein, nadine, nandaime, natan, nathan, nathania, nathene, nation, natuna, nayden, needham, neoteny, netan, netanyahu, newton, newtonian, newtown, newtowne, nodine, nomination, noontime, notation, nothin, nothin', notion, nowotny, nutone, nydam